The document discusses the structure of a computer. It is divided into two main parts: hardware and software. Hardware refers to the physical and tangible parts of a computer like keyboards, mice, monitors, printers and speakers. Software refers to the programs and applications that are run on the computer like operating systems, word processors, web browsers and more which are intangible. The document provides examples of input devices, output devices, programs and applications that make up the hardware and software parts of a computer.